Malicious PDF — malware analysis report

Static analysis result for SHA-256 848e85be382878ab…

MALICIOUS

PDF

39.9 KB Created: 2020-08-25 02:32:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46a47396bb35cd04c29482a6bb0f485e SHA-1: d762e5aa27a36a04d66c36f2e49cbe752671e36c SHA-256: 848e85be382878abf55b9db18358d0e1085f3f0c96c8c7ac1bf9624d75b112f9
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external PDF links, many hosted on Shopify. The primary intent appears to be directing users to malicious infrastructure or potentially distributing further malware through the linked PDFs.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=comprehensive+lesson+plan+template
    • http://vamumiga.caitlingriffiths.com/uploads/1/3/0/9/130969300/tazulajopupejevidelu.pdf
    • http://files.finksdeli.org/uploads/1/3/2/7/132741222/5b0259.pdf
    • http://guwom.teachingconnections.net/uploads/1/3/0/7/130775565/890032644b3e291.pdf
    • http://files.earthenhairandbody.com.au/uploads/1/3/1/3/131379057/razopagejoboted_pibirajoxikex_xodos.pdf
    • https://cdn.shopify.com/s/files/1/0429/7241/4106/files/63240926366.pdf
    • https://cdn.shopify.com/s/files/1/0428/9894/8255/files/10621723999.pdf
    • https://cdn.shopify.com/s/files/1/0433/9616/9886/files/elementary_linear_algebra_larson_8th.pdf
    • https://cdn.shopify.com/s/files/1/0431/0636/9697/files/black_screen_wallpaper.pdf
    • https://cdn.shopify.com/s/files/1/0437/0821/9547/files/basic_counseling_techniques.pdf
    • https://cdn.shopify.com/s/files/1/0430/2562/9335/files/because_you_loved_me_piano_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/2930/7287/files/vawulibevolatumifexan.pdf
    • https://cdn.shopify.com/s/files/1/0428/3911/3895/files/45913559903.pdf
    • https://cdn.shopify.com/s/files/1/0432/6372/1637/files/dabowime.pdf
    • https://cdn.shopify.com/s/files/1/0432/8734/7360/files/jurnal_akuntansi_perusahaan_dagang.pdf
    • https://cdn.shopify.com/s/files/1/0437/5969/8077/files/97256912832.pdf
    • https://cdn.shopify.com/s/files/1/0435/5624/1557/files/vifodivaxekezag.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005850.bin
8b71268e73dee8e1da0319a1ad88b0a0c1776334a16a6583f3d7a6b5cb7d6949		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5850 5024 bytes
font_01_sfnt_off0000693a.bin
ca081c4f522c2f41970167276789d772a66bd933229a532ca0a79e2c3ec9d60e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x693A 13356 bytes

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